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Gamma-ray flashes produced in Earth's atmosphere by severe lightning storms and upper atmospheric events.
Van Allen Belt ...

The "dancing sprites" observed above the ROTATIONAL (as opposed to the magnetic) axis of the pulsar are interpreted as a plasma confined within the relatively narrow compass of the magnetic dipole region (i.e., the ring you indicate) where the outflowing pulsar wind is also preferentially confined ...

red sprites (NASA Thesaurus) See sprites reddening (Galileo Project Glossary - JPL) The phenomenon of the trailing hemisphere of a planetary body being darker at shorter wavelengths ("redder") than the leading hemisphere.

However, when miners were unable to extract any copper from it they blamed a mischievous sprite of German mythology, Nickel (similar to Old Nick) for besetting the copper. They called this ore Kupfernickel from the German Kupfer for copper.

Puck is a mythological fairy or mischievous nature sprite. Puck is also a generalised personification of land spirits. Whilst being an aspect of Robin Goodfellow, he is also 'Hob ' and Will-o'-the-wisp....
] at night or exchange New Year gifts or supply superfluous drinks [another Yule
Yule ...

The math for computing ~ trajectories or plotting functions on a graphics card was daunting and very hard for me. But I persisted. I looked at example code, I called programmers to ask for advice, I went to the university and sat in on some classes.

Here Sobel digs into her bag of creative tools to deposit a ~ly, plausible, and entertaining fictional play in the middle of the book. The play deftly humanizes Copernicus and explores his relationship with Rheticus during their two-year collaboration.

Sentman, D. D. and Wescott, E. M. "Red ~s and Blue Jets: High-Altitude Optical Emissions Linked to Lightning." EOS, Trans. Amer. Geophys. Union 77, 1-4, 1996.

Umbriel -- In Alexander Pope's poem "The Rape of the Lock", a "dusky, melancholy ~".
Uranus -- Planet seventh in order from the sun. In Greek mythology, god of the sky, mate of the goddess of the Earth, and father of the Titans.

Airline pilots used to report sightings of strange flashes above thunderstorms, which remained taboo until the space shuttle also imaged them in the early 1990s. These ‘~s' and ‘jets' are electrical phenomena - still poorly understood - that flash upwards above a thundercloud.

Highlights of this HST Crab "movie" show wisps of material moving away from the pulsar at half the speed of light, a scintillating halo, and an intense knot of emission dancing, ~-like, above the pulsar's pole.

See also: See also: What is the meaning of Earth, Astro, Sun, Planet, Astronomer?

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